import Vue from 'vue'
import Router from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/Home.vue'
import Welcome from './components/Welcome.vue'
import Users from './components/user/Users.vue'
import Rights from './components/power/Rights.vue'
import Roles from './components/power/Roles.vue'
Vue.use(Router)
const router = new Router({
  routes: [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },

    {
      path: '/home', component: Home,
      redirect: '/welcome',
      children: [{ path: '/welcome', component: Welcome }, { path: '/users', component: Users },
      { path: '/rights', component: Rights }, { path: '/roles', component: Roles }]
    },

  ]
})
//挂载路由导航守卫
router.beforeEach((to, from, next) => {
  //to将要访问的路径
  //from代表从哪个路径跳转而来
  //next是一个函数，表示放行
  //next()放行 next('/login')强制跳转
  if (to.path == '/login') return next()
  //获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login')
  next()
})
export default router